WO2014166455A1

WO2014166455A1 - Interference measurement method, network side equipment and terminal side equipment

Info

Publication number: WO2014166455A1
Application number: PCT/CN2014/078042
Authority: WO
Inventors: 王瑜新; 陈艺戬; 孙云锋; 鲁照华; 弓宇宏
Original assignee: 中兴通讯股份有限公司
Priority date: 2013-07-08
Filing date: 2014-05-21
Publication date: 2014-10-16
Also published as: CN104284361A

Abstract

The present invention discloses an interference measurement method, network side equipment and terminal side equipment, said method comprising: a network side sending interference measurement indication information to a target terminal, instructing the target terminal to engage in interference measurement, said interference measurement indication information being used to indicate interference measurement parameter configuration information and/or used to indicate information regarding interference source type. the network side equipment of said device is used for sending interference measurement indication information to the target terminal, instructing the target terminal to engage in interference measurement, said interference measurement indication information being used to indicate interference measurement parameter configuration information and/or used to indicate information regarding interference source type.

Description

Interference measurement method, network side device and terminal side device

The present invention relates to wireless communication technologies, and in particular, to an interference measurement method, a network side device, and a terminal side device. Background technique

Inter-cell interference is an inherent problem in cellular mobile communication systems. The traditional solution is to use frequency reuse to avoid interference between adjacent cells by letting neighboring cells use different carrier frequencies. In the Orthogonal Frequency Division Multiplexing (OFDM) system, the frequency reuse coefficient is 1, that is, the neighboring cells use the same carrier frequency, and the inter-cell interference problem is also more than the traditional frequency reuse. The system is complicated. Long Term Evolution (LTE) is a system based on OFDM technology. It mainly uses inter-cell interference randomization, interference avoidance and coordination techniques to solve the interference problem. It is transmitted on the transmitting side through network-side precoding and cooperative scheduling. Avoid interference avoidance. However, based on the interference coordination of the sender, the accuracy of the channel state information (CSI, Channel State Information) of the feedback is largely determined. Due to the limitation of feedback signaling overhead and the delay of feedback processing, the current LTE system based on the method of sender interference coordination can not solve the interference problem well. How to effectively eliminate and suppress interference between cells and users is a follow-up An important direction to further effectively improve spectral efficiency.

In the LTE system, the common reference signal (CRS, Common Reference Signal) is used for pilot measurement and data demodulation, that is, all users use CRS for channel estimation. When the CRS-based precoding processing mode is used, the transmitting end needs to additionally notify the receiving end of the specific precoding matrix (also referred to as precoding weight) information used for data transmission, and the overhead of the pilot is large. Also in multi-user multiple input multiple output (MU-MIMO, Multi-user Multi-input In the Multi-output system, since multiple terminals use the same CRS, the pilot orthogonality cannot be achieved, so interference cannot be estimated.

In the LTE-Advanced (Advanced Long Term Evolution) system, in order to reduce the pilot overhead and improve the channel estimation accuracy, the pilot measurement and the data demodulation function are separated, and two types of reference signals are respectively defined: The reference signal (DM S, Demodulation Reference Signal) and the channel state information reference signal (CSI-RS, Channel State Information Referenced Signal). The CSI-RS is mainly used for channel measurement to obtain channel quality information (CQI, Channel Quaulity Information) and feedback, so that the base station side can use the information to complete user scheduling and complete modulation of the Modulation and Coding Scheme (MCS). The allocation of the CSI-RS does not carry the precoding information; the DM S is mainly used for the Physical Downlink Shared Channel (PDSCH) and the Enhanced Physical Downlink Control Channel (ePDCCH). The channel estimation is to complete the demodulation of the data/control channel, and the transmission of the DM S carries the precoding information of the corresponding PDSCH/ePDCCH. LTE and LTE-A systems can be divided into Frequency Division Duplex (FDD) and Time Division Duplex (TDD) systems according to different uplink and downlink duplex modes. CSI-RS and FDD and TDD systems. The pattern of the DMRS will vary.

The resource element (RE, Resource Element) is the minimum resource unit for uplink and downlink transmission. The position in the PRB can be represented by two-dimensional coordinates (k, l), where k is the frequency domain subcarrier index and 1 is the time domain OFDM symbol. index. For ePDCCH, two dedicated control channel resource units are defined: Enhanced Resource Element Group (eREG) and Enhanced Control Channel Element (eCCE, enhanced Control Channel Element) ₀ One PRB is sorted according to RE 0 to 15 The number can be divided into 16 eREGs, the eREGs numbered 0, 4, 8, and 12 are classified as eREG group 0, and the eREGs numbered 1, 5, 9, and 13 are classified as eREG group 1, numbered 2, 6 , 10, 14 eREG is classified as eREG group 2, numbered 3, 7, 11, The eREG of 15 is classified into eREG group 3. An eCCE can be composed of 4 eREGs (that is, each eREG grou corresponds to 1 eCCE) or 8 eREGs. (8 eREGs with an even number are composed of 1 eCCE, and the number is odd. The 8 eREGs make up another eCCE), as shown in Figure 3.

In the advanced receiver study at the receiving end, the performance of the receiver depends largely on the accuracy of the interference measurement. Currently, the existing LTE and LTE-A systems do not support accurate interference measurement for data solution. Tune. Although the interference measurement resource (IM, Interference Measurement Resource) is introduced in the LTE-A Rel-11 phase to measure the channel information of the interference signal, the signal is mainly used for CQI measurement, and the transmission period is relatively long, and The interference of each layer of the measurement data is not suitable for interference cancellation and suppression in data channel/control channel demodulation, and how to improve the interference measurement effect of the data channel/control channel is a problem to be solved. Summary of the invention

In view of this, the embodiments of the present invention are intended to provide an interference measurement method, a network side device, and a terminal side device, which can improve the interference measurement effect of the data channel/control channel.

The technical solution of the embodiment of the present invention is implemented as follows:

An interference measurement method, the method comprising:

The network side sends interference measurement indication information to the target terminal, and instructs the target terminal to perform interference measurement, where the interference measurement indication information includes at least one of the following information:

Parameter configuration information for indicating interference measurement;

Information used to indicate the type of interference source.

The parameter configuration information used to indicate the interference measurement includes at least one of the following information:

Common reference signal CRS port for interference measurement;

Data and/or control channel resources for interference measurements; Information indicating a physical cell identity ID of the interfering cell and/or a virtual cell ID of the interfering user;

Information for indicating a transmission mode of the interfering user equipment UE;

Information indicating the power of the transmitted signal of the interfering cell.

The CRS port used for interference measurement includes: CRS port 0, CRS port 1, CRS port 2, at least one port of CRS port 3;

The method further includes: the network side transmitting a zero power signal on the resource element RE corresponding to the CRS port of the bandwidth where the target terminal is located, and the target terminal performing interference measurement by using the signal received on the RE.

The CRS port used for interference measurement is CRS port 2 and/or CRS port 3. The data and/or control channel resources used for the interference measurement are configured by the network side, or are predefined resources;

The method further includes: the network side transmitting a zero power signal on the RE corresponding to the resource, and the target terminal performing interference measurement by using the signal received on the resource.

The data and/or control channel resources used for interference measurement, the number N of resources in each resource block RB is related to the scheduling type of the neighboring cell;

When the neighboring cell is scheduled in sub-band units, then N<=M; when the neighboring cell is scheduled in units of RBs, then N>M, where M is an integer between 1 and 4, including 1 And 4.

The data and/or control channel resources used for interference measurement include:

In the case of a frequency division duplex FDD system with a regular cyclic prefix Normal CP, the demodulation reference of the first and/or second to last time domain symbols of the first and/or second time slots in each subframe The signal DM S and the channel state information reference signal CSI-RS occupy resources other than resources, including coordinates (7, 5), (7, 6), (7, 12), (7, 13), (4, 5), (4, 6), (4, 12), (4, 13) RE;

or, Resources other than the resources occupied by the CRS of the first and/or second time domain symbols of the second time slot in each subframe, including coordinates (11, 7), (11, 8), (10) , 7), (10, 8), (8, 7), (8, 8), (7, 7), (7, 8), (5, 7), (5, 8), (4, 7 ), (4, 8), (2, 7), (2, 8), (1, 7), (1, 8) RE;

Or,

Resources other than the resources occupied by the CRS of the fifth time domain symbol of the first and/or second time slot in each subframe, including coordinates (11, 4), (11, 11), (10) , 4), (10, 11), (8, 4), (8, 11), (7, 4), (7, 11), (5, 4), (5, 11), (4, 4 ), (4, 11), (2, 4), (2, 11), (1, 4), (1, 11) RE.

In the case where the FDD system extends the cyclic prefix Extended CP, the resources of the third time domain symbol of the second time slot in each subframe include coordinates (11, 8), (10, 8), (9, 8). , (8, 8), (7, 8), (6, 8), (5, 8), (4, 8), (3, 8), (2, 8), (1, 8), ( 0, 8) of the RE;

Or,

Resources other than the resources occupied by the CRS of the first and/or second time domain symbols of the second time slot in each subframe, including coordinates (11, 6), (11, 7), (10) , 6), (10, 7), (8, 6), (8, 7), (7, 6), (7, 7), (5, 6), (5, 7), (4, 6 ), (4, 7), (2, 6), (2, 7), (1, 6), (1, 7) RE.

In the case of a regular cyclic prefix of a time division duplex TDD system, the first and/or second last time domain symbols of the first and/or second time slots in each subframe are other than the resources occupied by the DM S. Other resources, including coordinates (9, 5), (9, 6), (9, 12), (9, 13), (8, 5), (8, 6), (8, 12), ( 8, 13), (7, 5), (7, 6), (7, 12), (7, 13), (4, 5), (4, 6), (4, 12), (4, 13), (3, 5), (3, 6), (3, 12), (3, 13) RE;

Or,

Resources other than the resources occupied by the CRS in the first time slot of each subframe and/or the fifth time domain symbol of the second time slot, including coordinates (11, 4), (11, 11), (10, 4), (10, 11), (8, 4), (8, 11), (7, 4), (7, 11), (5, 4), (5, 11), (4 , 4), (4, 11), (2, 4), (2, 11), (1, 4), (1, 11) RE;

Or,

The resources of the third time domain symbol of the second time slot in each subframe, including coordinates (11, 9), (10, 9), (9, 9), (8, 9), (7, 9 ), (6, 9), (5, 9), (4, 9), (3, 9), (2, 9), (1, 9), (0, 9) RE.

In the case where the TDD system extends the cyclic prefix, the resources of the first and/or second-last time-domain symbols of the first and/or second time slots in each subframe other than the resources occupied by the DM S , including coordinates (9, 4), (9, 5), (6, 4), (6, 5), (3, 4), (3, 5), (0, 4), (0, 5 RE;

Or,

Resources other than the resources occupied by the CRS of the first and/or second time domain symbols of the second time slot in each subframe, including coordinates (11, 6), (11, 9), (10) , 6), (10, 9), (8, 6), (8, 9), (7, 6), (7, 9), (5, 6), (5, 9), (4, 6 ), (4, 9), (2, 6), (2, 9), (1, 6), (1, 9) RE.

The information used to indicate the type of the interference source includes at least one of the following information:

Interference from the physical downlink shared channel PDSCH;

Interference from the enhanced physical downlink control channel ePDCCH;

Interference from the physical downlink control channel PDCCH; Interference from the mixed channel.

The method further includes: the network side indicating, by the high layer signaling/physical layer dynamic signaling, the CRS port for interference measurement to the target terminal.

The network side configures, by the high-layer signaling, multiple sets of CRS ports for interference measurement for the target terminal, and indicates to the target terminal, by using physical layer dynamic signaling, a set of C S ports for current interference measurement.

The method further includes: the network side indicating, by the high layer signaling/physical layer dynamic signaling, the data and/or control channel resources for the interference measurement to the target terminal.

The network side configures, by the high-layer signaling, multiple sets of data and/or control channel resources for interference measurement for the target terminal, and indicates to the target terminal, by using physical layer dynamic signaling, a set of data and/or Or control channel resources for current interference measurements.

The method further includes: the network side transmitting a zero power signal on the CRS port for interference measurement, or data and/or control channel resources for interference measurement, and using rate matching or punching The way to do data mapping.

The scheduling type information is exchanged between the network side base station and the base station through the X2 interface, and the scheduling type includes: performing resource scheduling in units of sub-bands, performing resource scheduling in units of RBs, and whether pre-coding operations are bound.

An interference measurement method, the method comprising:

The target terminal receives the interference measurement indication information sent by the network side, and performs interference measurement according to the indication of the interference measurement indication information, where the interference measurement indication information includes at least one of the following information:

Parameter configuration information for indicating interference measurement;

Information used to indicate the type of interference source.

A network side device, where the network side device includes:

The interference measurement indication unit is configured to indicate the target terminal according to the interference measurement indication information And performing interference measurement, where the interference measurement indication information includes: parameter configuration information used to indicate interference measurement, and/or information used to indicate an interference source type;

And a sending unit, configured to send the interference measurement indication information to the target terminal.

The interference measurement indicating unit and the transmitting unit may use a central processing unit (CPU), a digital signal processor (DSP, Digital Singnal Processor), or a programmable logic array (FPGA, Field) when performing processing. - Programmable Gate Array) implementation.

A terminal side device, where the terminal side device is a target terminal, including:

a receiving unit, configured to receive interference measurement indication information, where the interference measurement indication information includes: parameter configuration information used to indicate interference measurement, and/or information used to indicate an interference source type; and an interference measurement unit configured to follow Interference measurement indication information indicates interference measurement.

The receiving unit and the interference measuring unit may use a central processing unit (H), a digital signal processor (DSP, Digital Singnal Processor) or a programmable comic array 'J ( FPGA, Field - Programmable Gate Array) implementation.

The method of the embodiment of the present invention includes: the network side sends interference measurement indication information to the target terminal, and indicates that the target terminal performs interference measurement, where the interference measurement indication information includes parameter configuration information used to indicate interference measurement and/or is used for indication. Information about the type of interference source.

In the embodiment of the present invention, since the network side transmits interference measurement indication information to the target terminal, the information indicates that the target terminal performs interference measurement, and therefore, the interference measurement effect of the data channel/control channel can be improved. DRAWINGS

1 is a schematic diagram of a target terminal being interfered by a neighboring cell according to an embodiment of the present invention; FIG. 2 is a schematic diagram of measuring interference by using a CRS port 2/3 according to an embodiment of the present invention; 3 is a schematic diagram of a resource of data and/or control channel used for interference measurement in a case of a conventional cyclic prefix of an FDD system according to an embodiment of the present invention;

4 is a schematic diagram of another resource for data and/or control channel for interference measurement in the case of a conventional cyclic prefix of an FDD system according to an embodiment of the present invention;

Figure 5 is a further resource diagram of data and/or control channels for interference measurement in the case of a conventional cyclic prefix of an FDD system;

6 is a schematic diagram of a resource of data and/or control channel used for interference measurement in the case of extending a cyclic prefix in an FDD system according to an embodiment of the present invention;

FIG. 7 is a schematic diagram of another resource of data and/or control channel for interference measurement in the case of extending a cyclic prefix in an FDD system according to an embodiment of the present invention; FIG.

8 is a schematic diagram of a resource of data and/or control channel used for interference measurement in a case of a conventional cyclic prefix of a TDD system according to an embodiment of the present invention;

FIG. 9 is a schematic diagram of another resource for data and/or control channel for interference measurement in the case of a conventional cyclic prefix of a TDD system according to an embodiment of the present invention; FIG.

10 is a schematic diagram of still another resource of data and/or control channel for interference measurement in the case of a conventional cyclic prefix of the TDD system of the present invention;

11 is a schematic diagram of a resource of data and/or control channel used for interference measurement in a case where a TDD system extends a cyclic prefix according to an embodiment of the present invention;

Figure 12 is a schematic diagram of another resource for data and/or control channels for interference measurement in the case of a TDD system extending a cyclic prefix according to an embodiment of the present invention. detailed description

The implementation of the technical solution will be further described in detail below with reference to the accompanying drawings.

The embodiments of the present invention mainly include the following contents:

The interference measurement method in the embodiment of the present invention includes:

The network side sends interference measurement indication information to the target terminal, and instructs the target terminal to perform the The interference measurement indication information is used to indicate one or more of the following information to the target terminal:

(1) Parameter configuration information for indicating interference measurement;

(2) Information indicating the type of interference source.

Preferably, the parameter configuration information used to indicate interference measurement includes one or more of the following information:

(1) CRS port for interference measurement;

(2) Data and/or control channel resources used for interference measurements;

(3) information indicating a physical cell ID of the interfering cell and/or a virtual cell ID of the interfering user;

(4) information for indicating a transmission mode of the interfering user equipment (UE);

(5) information for indicating the power of the transmitted signal of the interfering cell;

Preferably, the CRS port for interference measurement includes: one or more of CRS port 0, CRS port 1, CS port 2, and CS port 3, and the network side corresponds to the CRS port of the bandwidth where the target terminal is located. A zero power signal is transmitted on the RE, and the target terminal performs interference measurement by the signal received on the RE.

Preferably, the CRS port used for interference measurement is a CRS port 2 and/or a CRS port.

3.

Preferably, the data and/or control channel resources used for the interference measurement are configured by the network side, or are predefined resources, and the network side sends a zero-power signal on the RE corresponding to the resource, and the target terminal passes The received signal on the resource performs interference measurement.

Preferably, the data and/or control channel resources used for interference measurement, the number of resources (denoted as N) in each resource block (RB) is related to the scheduling type of the neighboring cell. When the neighboring cell is scheduled in sub-band units, then N<=M; when the neighboring cell is scheduled in units of RBs, then N>M, where M is an integer between 1 and 4, including 1 And 4. Preferably, the data and/or control channel resources used for interference measurement include:

(1) In the case of the normal cyclic prefix (Normal CP) of the FDD system, the first and/or second-to-last time-domain symbols of the first and/or second time slots in each subframe are divided by DM S And resources other than the resources occupied by CSI-RS, including coordinates (7, 5), (7, 6), (7, 12), (7, 13), (4, 5), (4, 6) , (4, 12), (4, 13) RE;

Or, other resources of the first and/or second time domain symbols of the second time slot in each subframe except the resources occupied by the CRS, including coordinates (11, 7), (11, 8) , (10, 7), (10, 8), (8, 7), (8, 8), (7, 7), (7, 8), (5, 7), (5, 8), ( 4, 7), (4, 8), (2, 7), (2, 8), (1, 7), (1, 8) RE;

Or, except for the fifth time domain symbol of the first and/or second time slot in each subframe

Resources other than resources occupied by CRS, including coordinates (11, 4), (11, 11), (10, 4), (10, 11), (8, 4), (8, 11), (7 , 4), (7, 11), (5, 4), (5, 11), (4, 4), (4, 11), (2, 4), (2, 11), (1, 4 ), (1, 11) of the RE;

(2) In the case of the extended cyclic prefix (Extended CP) of the FDD system, the resources of the third time domain symbol of the second time slot in each subframe include coordinates (11, 8), (10, 8), (9, 8), (8, 8), (7, 8), (6, 8), (5, 8), (4, 8), (3, 8), (2, 8), (1 , 8), (0, 8) of the RE;

Or other resources other than the resources occupied by the CRS of the first and/or second time domain symbols of the second time slot in each subframe, including coordinates (11, 6), (11, 7), (10, 6), (10, 7), (8, 6), (8, 7), (7, 6), (7, 7), (5, 6), (5, 7), (4 , 6), (4, 7), (2, 6), (2, 7), (1, 6), (1, 7) RE;

(3) In the case of a regular cyclic prefix of the TDD system, the first and/or second-to-last time-domain symbols of the first and/or second time slots in each subframe are other than the resources occupied by the DMRS. Other resources, including coordinates (9, 5), (9, 6), (9, 12), (9, 13), (8, 5), (8, 6), (8, 12), (8 , 13), (7, 5), (7, 6), (7, 12), (7, 13), (4, 5), (4, 6), (4, 12), (4, 13), (3, 5), (3, 6), (3, 12), (3, 13) RE;

Or, the resources of the fifth time domain symbol of the first time slot and/or the second time slot of each subframe other than the resources occupied by the CRS, including coordinates (11, 4), (11, 11), (10, 4), (10, 11), (8, 4), (8, 11), (7, 4), (7, 11), (5, 4), (5, 11) , (4, 4), (4, 11), (2, 4), (2, 11), (1, 4), (1, 11) RE;

Or, the resource of the third time domain symbol of the second time slot in each subframe, including coordinates (11, 9), (10, 9), (9, 9), (8, 9), ( RE of 7, 9), (6, 9), (5, 9), (4, 9), (3, 9), (2, 9), (1, 9), (0, 9);

(4) In the case where the TDD system extends the cyclic prefix, the first and/or second-to-last time-domain symbols of the first and/or second time slots in each subframe are other than the resources occupied by the DM S. Other resources, including coordinates (9, 4), (9, 5), (6, 4), (6, 5), (3, 4), (3, 5), (0, 4), ( 0, 5) of the RE;

Or, other resources of the first and/or second time domain symbols of the second time slot in each subframe except the resources occupied by the CRS, including coordinates (11, 6), (11, 9) , (10, 6), (10, 9), (8, 6), (8, 9), (7, 6), (7, 9), (5, 6), (5, 9), ( 4, 6), (4, 9), (2, 6), (2, 9), (1, 6), (1, 9) RE;

Preferably, the information used to indicate the type of the interference source includes a combination of one or more of the following:

(1) interference from the PDSCH;

(2) interference from the ePDCCH;

(3) interference from the PDCCH;

(4) Interference from the mixed channel.

Preferably, the network side indicates the CRS port for interference measurement to the target terminal by using high layer signaling/physical layer dynamic signaling. Preferably, the network side configures multiple sets of target terminals for interference measurement through high layer signaling.

The C S port, and indicates to the target terminal through the physical layer dynamic signaling that one of the CRS ports is used for the current interference measurement;

Preferably, the network side indicates the data and/or control channel resources for interference measurement to the target terminal through high layer signaling/physical layer dynamic signaling.

Preferably, the network side determines the resource index for the dry measurement by Equation 1 or Equation 2 as follows:

Equation 1: Resource Index = (physical cell ID / virtual cell ID) mod (total number of resources)

+1

Equation 2: Resource index = (physical cell ID / virtual cell ID) mod (total number of resources) Preferably, the network side configures multiple sets of data and/or control channel resources for interference measurement for the target terminal through high layer signaling, and passes The physical layer dynamic signaling indicates to the target terminal that a set of data and/or control channel resources are used for the current interference measurement.

Preferably, the network side indicates the type of the interference to the target terminal through high layer signaling/physical layer dynamic signaling.

Preferably, the network side transmits a zero power signal on the CRS port or data and/or control channel resources for interference measurement, and performs data mapping by means of rate matching or puncturing.

Preferably, the network side base station and the base station exchange scheduling type information through the X2 interface, and the scheduling type includes: resource scheduling in units of sub-bands, resource scheduling in units of RBs, and bundling of pre-coding operations.

The target terminal receives the interference measurement indication information sent by the network side, and performs interference measurement according to the indication of the interference measurement indication information, where the interference measurement indication information is used to indicate one or more of the following information:

(2) Information indicating the type of interference source. Preferably, the parameter configuration information used to indicate interference measurement includes one or more of the following information:

(1) CRS port for interference measurement;

(2) Data and/or control channel resources used for interference measurements;

(4) information for indicating interference with the UE transmission mode;

3.

Preferably, the data and/or control channel resources used for the interference measurement are configured by the network side, or are predefined resources, and the network side sends a zero power signal on the RE corresponding to the resource, and the The received signal on the resource performs interference measurement.

Preferably, the data and/or control channel resources used for interference measurement, the number of resources (denoted as N) in each RB is related to the scheduling type of the neighboring cell. When the neighboring cell is scheduled in sub-band units, then N<=M; when the neighboring cell is scheduled in units of RBs, then N>M, where M is an integer between 1 and 4, including 1 And 4.

Preferably, the data and/or control channel resources used for interference measurement include:

(1) In the case of the normal cyclic prefix (Normal CP) of the FDD system, the first and/or second-to-last time-domain symbols of the first and/or second time slots in each subframe are divided by DM S And resources other than the resources occupied by CSI-RS, including coordinates (7, 5), (7, 6), RE of (7, 12), (7, 13), (4, 5), (4, 6), (4, 12), (4, 13);

Or, other resources other than the resources occupied by the CRS of the fifth time domain symbol of the first and/or second time slot in each subframe, including coordinates (11, 4), (11, 11) , (10, 4), (10, 11), (8, 4), (8, 11), (7, 4), (7, 11), (5, 4), (5, 11), ( 4,

4), (4, 11), (2, 4), (2, 11), (1, 4), (1, 11) RE;

(3) In the case of a regular cyclic prefix of the TDD system, the first and/or second-to-last time-domain symbols of the first and/or second time slots in each subframe are other than the resources occupied by the DM S. Other resources, including coordinates (9, 5), (9, 6), (9, 12), (9, 13), (8, 5), (8, 6), (8, 12), ( 8, 13), (7, 5), (7, 6), (7, 12), (7, 13), (4,

5), (4, 6), (4, 12), (4, 13), (3, 5), (3, 6), (3, 12), (3, 13) RE;

Or, the resources of the fifth time domain symbol of the first time slot and/or the second time slot of each subframe other than the resources occupied by the CRS, including coordinates (11, 4), (11, 11, 11), (10, 4), (10, 11), (8, 4), (8, 11), (7, 4), (7, 11), (5, 4), (5, 11), (4, 4) , (4, ιι), (2, 4), (2, 11), (1, 4), (1, 11) RE;

(4) In the case where the TDD system extends the cyclic prefix, the first and/or second-to-last time-domain symbols of the first and/or second time slots in each subframe are other than the resources occupied by the DM S. Other resources, including coordinates (9, 4), (9, 5), (6, 4), (6, 5), (3, 4), (3,

5), RE of (0, 4), (0, 5);

Or, except for the first and/or second time domain symbols of the second time slot in each subframe

Resources other than resources occupied by CRS, including coordinates (11, 6), (11, 9), (10, 6), (10, 9), (8, 6), (8, 9), (7) , 6), (7, 9), (5, 6), (5, 9), (4, 6), (4, 9), (2, 6), (2, 9), (1, 6 ), (1, 9) of the RE;

(1) interference from the PDSCH;

(2) interference from the ePDCCH;

(3) interference from the PDCCH;

(4) Interference from the mixed channel.

Preferably, the target terminal receives the network side to send through the high layer signaling/physical layer dynamic signaling.

C S port information, the CRS port for interference measurement is determined.

Preferably, the target terminal receives multiple sets of CRS ports for interference measurement configured by the network side through the high layer signaling for the target terminal, and determines, by using the received physical layer dynamic signaling, one set of CRS ports for current interference measurement. .

Preferably, the target terminal receives the network side through the high layer signaling/physical layer dynamic signaling. The data and/or control channel resources used for interference measurements are determined for the data and/or control channel resources used for the interference measurements.

Preferably, the target terminal determines the resource index for the dry measurement by Equation 1 or Equation 2 as follows:

+1

Equation 2: Resource index = (physical cell ID / virtual cell ID) mod (total number of resources) Preferably, the target terminal receives multiple sets of data and/or control channels for interference measurement configured by the network side for the target terminal through higher layer signaling. Resources, and determine, by the received physical layer dynamic signaling, a set of data and/or control channel resources used for current interference measurements.

Preferably, the target terminal receives the type of interference sent by the network side through high layer signaling/physical layer dynamic signaling, and determines the type of interference.

Preferably, the target terminal defaults to the network side transmitting a zero power signal on the CRS port or data and/or control channel resources used for the measurement, and extracting data according to the rate matching or puncturing rule of the data mapping.

In the network side, the network side device of the embodiment of the present invention is configured to send interference measurement indication information to the target terminal, and instruct the target terminal to perform interference measurement, where the interference measurement indication information is used to indicate the following information to the target terminal. One or more of:

(2) Information indicating the type of interference source.

(1) CRS port for interference measurement;

(2) Data and/or control channel resources used for interference measurements;

(3) information indicating a physical cell ID of the interfering cell and/or a virtual cell ID of the interfering user; (4) information for indicating a transmission mode of the interfering user equipment (UE);

Preferably, the CRS port used for interference measurement includes: one or more of CRS port 0, CRS port 1, CRS port 2, and CRS port 3, and the network side device may be in the CRS port of the bandwidth where the target terminal is located. A zero power signal is transmitted on the corresponding RE, and the target terminal performs interference measurement by using the signal received on the RE.

3.

Preferably, the data and/or control channel resources used for the interference measurement are configured by the network side device, or are predefined resources, and the network side device sends a zero power signal on the RE corresponding to the resource, and the target The terminal makes interference measurements by signals received on the resources.

Preferably, the data and/or control channel resources used for interference measurement, the number of resources (denoted as N) in each resource block (RB) is related to the scheduling type of the neighboring cell. When the neighboring cell is scheduled in sub-band units, then N<=M; when the neighboring cell is scheduled in units of RBs, then N>M, where M is an integer between 1 and 4, including 1 And 4.

Or, except for the fifth time domain symbol of the first and/or second time slot in each subframe Resources other than resources occupied by CRS, including coordinates (11, 4), (11, 11), (10, 4), (10, 11), (8, 4), (8, 11), (7 , 4), (7, 11), (5, 4), (5, 11), (4,

4), (4, 11), (2, 4), (2, 11), (1, 4), (1, 11) RE;

5), (4, 6), (4, 12), (4, 13), (3, 5), (3, 6), (3, 12), (3, 13) RE;

(4) In the case where the TDD system extends the cyclic prefix, the first and/or the first in each subframe The resources of the first and/or second-to-last time-domain symbols of the two time slots except the resources occupied by the DM S, including coordinates (9, 4), (9, 5), (6, 4) ), (6, 5), (3, 4), (3, 5), (0, 4), (0, 5) RE;

(1) interference from the PDSCH;

(2) interference from the ePDCCH;

(3) interference from the PDCCH;

(4) Interference from the mixed channel.

Preferably, the network side device indicates the CRS port for interference measurement to the target terminal through high layer signaling/physical layer dynamic signaling.

Preferably, the network side device configures multiple sets of CRS ports for interference measurement for the target terminal through high layer signaling, and indicates to the target terminal through the physical layer dynamic signaling that one set of CRS ports is used for current interference measurement;

Preferably, the network side device indicates the data and/or control channel resources for interference measurement to the target terminal through high layer signaling/physical layer dynamic signaling.

Preferably, the network side device determines the resource index for interference measurement by Equation 1 or Equation 2 as follows:

+1

Equation 2: Resource index = (physical cell ID / virtual cell ID) mod (total number of resources) Preferably, the network side device configures multiple sets of target terminals for interference measurement through higher layer signaling. The data and/or control channel resources are indicated to the target terminal by physical layer dynamic signaling to utilize a set of data and/or control channel resources for current interference measurements.

Preferably, the network side device indicates the type of the interference to the target terminal through high layer signaling/physical layer dynamic signaling.

Preferably, the network side device sends a zero power signal on the CRS port or data and/or control channel resource used for interference measurement, and performs data mapping by using rate matching or puncturing.

Preferably, the base station on the network side and the base station exchange scheduling type information through the X2 interface, and the scheduling type includes: performing resource scheduling in units of sub-bands, performing resource scheduling in units of RBs, and whether binding operations are bound (bundling) .

The terminal side device of the embodiment of the present invention, the terminal side device is used as the target terminal, and is configured to receive interference measurement indication information sent by the network side device, and perform interference measurement according to the indication of the interference measurement indication information, where The interference measurement indication information is used to indicate one or more of the following information:

(2) Information indicating the type of interference source.

(1) CRS port for interference measurement;

(2) Data and/or control channel resources used for interference measurements;

(4) information for indicating interference with the UE transmission mode;

Preferably, the CRS port used for interference measurement comprises: CRS port 0, CRS port 1. One or more of the CRS port 2 and the CRS port 3, the network side device sends a zero power signal on the RE corresponding to the CRS port of the bandwidth where the target terminal is located, and the target terminal receives the received signal on the RE. The signal is used for interference measurement.

Preferably, the CRS port for interference measurement is CRS port 2 and/or CRS port 3.

Preferably, the data and/or control channel resources used for the interference measurement are configured by the network side device, or are predefined resources, and the network side device sends a zero power signal on the RE corresponding to the resource, and Interference measurements are made by signals received on the resources.

Or, other resources other than the resources occupied by the CRS of the fifth time domain symbol of the first and/or second time slot in each subframe, including coordinates (11, 4), (11, 11) , (10, 4), (10, 11), (8, 4), (8, 11), (7, 4), (7, 11), (5, 4), (5, 11), ( RE of 4, 4), (4, 11), (2, 4), (2, 11), (1, 4), (1, 11); (2) In the case of the extended cyclic prefix (Extended CP) of the FDD system, the resources of the third time domain symbol of the second time slot in each subframe include coordinates (11, 8), (10, 8), (9, 8), (8, 8), (7, 8), (6, 8), (5, 8), (4, 8), (3, 8), (2, 8), (1 , 8), (0, 8) of the RE;

Or the division of the first and/or second time domain symbols of the second time slot in each subframe

Resources other than resources occupied by CRS, including coordinates (11, 6), (11, 7), (10, 6), (10, 7), (8, 6), (8, 7), (7) , 6), (7, 7), (5, 6), (5, 7), (4, 6), (4, 7), (2, 6), (2, 7), (1, 6 ), (1, 7) of the RE;

(3) In the case of a regular cyclic prefix of the TDD system, the first and/or second-to-last time-domain symbols of the first and/or second time slots in each subframe are other than the resources occupied by the DMRS. Other resources, including coordinates (9, 5), (9, 6), (9, 12), (9, 13), (8, 5), (8, 6), (8, 12), (8 , 13), (7, 5), (7, 6), (7, 12), (7, 13), (4, 5), (4, 6), (4, 12), (4, 13 ), (3, 5), (3, 6), (3, 12), (3, 13) RE;

(4) In the case where the TDD system extends the cyclic prefix, the first and/or second-to-last time-domain symbols of the first and/or second time slots in each subframe are other than the resources occupied by the DMRS. Other resources, including coordinates (9, 4), (9, 5), (6, 4), (6, 5), (3, 4), (3, 5), (0, 4), (0 , 5) of the RE; Or, except for the first and/or second time domain symbols of the second time slot in each subframe

(1) interference from the PDSCH;

(2) interference from the ePDCCH;

(3) interference from the PDCCH;

(4) Interference from the mixed channel.

Preferably, the target terminal receives the CRS port information sent by the network side device through high layer signaling/physical layer dynamic signaling, and determines the CRS port used for interference measurement.

Preferably, the target terminal receives multiple sets of CRS ports for interference measurement configured by the network side device for the target terminal through high layer signaling, and determines, by using the received physical layer dynamic signaling, a set of CRS ports for current interference. measuring.

Preferably, the target terminal receives the data and/or control channel resources for interference measurement sent by the network side device by using the high layer signaling/physical layer dynamic signaling, and determines the data and/or control channel for interference measurement. Resources.

+1

Equation 2: Resource index = (physical cell ID / virtual cell ID) mod (total number of resources) Preferably, the target terminal receives multiple sets of data and/or control for interference measurement configured by the network side device for the target terminal through higher layer signaling. Channel resources, and determining, by the received physical layer dynamic signaling, a set of data and/or control channel resources for current interference measurements. Preferably, the target terminal receives the type of interference that the network side device sends through high layer signaling/physical layer dynamic signaling, and determines the type of interference.

Preferably, the target terminal defaults to the network side device transmitting a zero power signal on the CRS port or data and/or control channel resources used for interference measurement, and extracting data according to a rate matching or puncturing rule of the data mapping.

In summary, the embodiments of the present invention improve the interference measurement effect on the data channel and the control channel by using network signaling to improve the interference cancellation/interference suppression effect of the receiver, and finally improve the spectrum efficiency of the network.

The following is an example of the embodiments of the present invention.

In the LTE/LTE-A system, the received signal (N _Rx xl dimension, where N _Rx represents the number of receiving antennas) of the receiver on the kth subcarrier and the / / OFDM symbol can be expressed as its own signal (k, I) d, (k, I), the sum of the interference signal (k, I) (k, I) ( j > \ ) and the noise n (k, /): r(k, /) = {k, I) d, {k, /) + Z (k, l) ύ _} (k, l) + n(k, I) where, and K, respectively represent the xi-dimensional transmitted signal vector between the jth cell and the target terminal And N _Tx xr dimensional equivalent channel matrix, where N _Tx represents the number of transmitting antennas, and r represents the number of transmitting layers. (k, 1) = (k, I) ^ (k, /), where (k, l) is the N _Rx x N _Tx dimensional channel matrix, and (k, l) is the N _Tx xr dimensional precoding matrix. The estimated signal ^, /) of the UE side is rxl dimension, which can be obtained by the receiving weight U^/) of the rxN _Rx dimension:

λ people ή = ν^, ήφ, )

For advanced receiver MMSE-IRC receivers, the receive weights are:

W^^k ) = Hf (t,/)R- ¹ , R=P _i n _i (k, /)Hf (k, 1)+^ (k )^ {k,l)+a ² \

' j=2

Where ^.(t,/)( >i) is the equivalent channel matrix of the estimated interference signal.

Or, in the case where the equivalent channel matrix of the interference signal cannot be estimated, it may be based on reception To the signal power of the dry 4 Eucalyptus noise to estimate the covariance matrix 13⁄4 , Z r(k )r(k, l) ^H

k ^IMR_NAIC where, dish - N4/C is the resource used for interference measurement, ■, P. The number of samples used to interfere with measurement resources.

Related literature/techniques have demonstrated that the demodulation performance is greatly improved with respect to the conventional MRC or MMSE using the MMSE-IRC receiver, because the MMSE-IRC receiver can utilize the interference channel covariance matrix or interference plus noise. The received signal power obtains a more accurate reception weight. Therefore, knowing more accurate interference measurement information is an effective way to further improve reception performance in the case of MMSE-IRC or higher receivers.

Embodiment 1

The present embodiment provides an interference measurement method. The network side sends interference measurement indication information by using high layer signaling and/or physical layer dynamic signaling, and the interference measurement indication information indicates that the target terminal measures interference information at the CRS port. The CRS port for measuring interference is configured on the network side or is predefined.

As shown in FIG. 1 , for example, the cell ID of the cell 1 is 0, the cell ID of the cell 2 is 1, the UE 1 is the target terminal, and the network side of the cell 1 and the cell 2 are 4 transmit antennas, the network side and the target terminal. The default predefined CRS port 2 and CRS port 3 are used to measure interference information. The time-frequency positions of the CRS ports of cell 1 and cell 2 are as shown in Fig. 2. The cell 1 sends the interference measurement indication information to the target terminal UE 1 to measure the interference, and the network side sends a zero power signal on the RE corresponding to the CRS port 2 and the CS port 3 of the bandwidth occupied by the UE 1, and the UE 1 is on the CRS port 2 And the CRS port 3 receives the signal as interference from the cell 2, adding white noise. The target terminal demodulates the received data using the MMSE-IRC receiver.

Alternatively, the network side configures the CRS port for the target terminal UE 1 to measure interference, and the CRS ports that can be configured include CRS port 0, CRS port 1, CRS port 2, and CRS port 3. One or more of the configurations, which may be configured through high-level signaling, or

The DCI signaling is configured, for example, by 2-bit DCI signaling, as shown in Table 1, or configured by 3-bit DCI signaling, as shown in Table 2.

Table 1

Embodiment 2

The present embodiment provides an interference measurement method, where the network side sends interference measurement indication information by using high layer signaling and/or physical layer dynamic signaling, and the interference measurement indication information indicates that the target terminal performs interference by using specified data and/or control channel resources. measuring.

The specified data and/or control channel resource is configured by the network side, or is a predefined resource, and the network side sends a zero-power signal on the RE corresponding to the resource, and the target terminal receives the resource through the resource. The signal is used for interference measurement.

The data and/or control channel resources used for interference measurement, in the case of a normal cyclic prefix (Normal CP) of the FDD system, the resources include one or more of the following:

(1) The resources of the first and/or second-last time-domain symbols of the first and/or second time slots in each subframe other than the resources occupied by the DM S and the CSI-RS, such as Figure 3 Show, predefined resource country (recorded as resource 1, time-frequency position coordinates are (7, 5), (7, 6),

(7, 12), (7, 13) ) and/or (denoted as resource 2, time-frequency position coordinates are (4, 5), (4, 6), (4, 12), (4, 13) Used to measure interference, or notify the target terminal to use resource 1 and/or resource 2 for interference measurement through high-level signaling or DCI signaling; or define RE of (7, 5), (7, 6) as resource 1, definition (7, 12), (7, 13) RE resources 2, definitions (4, 5), (4, 6) are resources 3, definitions (4, 12), (4, 13) are resources 4, through high-level The signaling or DCI signaling informs the target terminal to use one or more of the four resources.

(2) The resources other than the resources occupied by the CRS of the first and/or second time domain symbols of the second time slot in each subframe, as shown in FIG. 4, considering the frequency domain position of the CRS As the cell ID is shifted (in the initial frequency domain position of the CRS in one RB = (cell ID) mod 6), the resources including the CRS are divided into four groups, and each group is used when performing interference measurement using resources. The resources occupied by the CRS are excluded, and the resources that can be used in each group are 4 REs. Notifying the target terminal to use resource 1 and/or resource 2 and/or resource 3 and/or resource 4 for interference measurement by high layer signaling or DCI signaling, as shown in Table 3;

Form 3

(3) The resources other than the resources occupied by the CRS of the fifth time domain symbol of the first and/or second time slot in each subframe, as shown in FIG. 5, considering the frequency domain position of the CRS With small The area ID is shifted (the initial frequency domain position of the CRS in one RB = (cell ID) mod 6), so the resources including the CRS are divided into 4 groups, and when the resources are used for interference measurement, each group is If the resources occupied by CRS are excluded, the resources that can be used in each group are 4 REs. Notifying the target terminal to use the resource 1 and/or the resource 2 and/or the resource 3 and/or the resource 4 for interference measurement by high layer signaling or DCI signaling, as shown in Table 4; or, depending on the time slot in which it is located, Each of the four groups of resources is further divided into two groups, so that eight resources can be obtained, and the target terminal is notified by the high-level signaling or DCI signaling to use one of the eight resources for interference measurement.

Form 4

In addition to the above-mentioned high-level signaling or DCI signaling to inform the target terminal which resource to use for interference measurement, the target terminal can also determine the resource index for interference measurement by the following formula 1 or formula 2:

+1

Equation 2: Resource Index = (physical cell ID / virtual cell ID) mod (total number of resources) Note that if the resource index is numbered starting from 1, formula 1 is used, and if the resource index is numbered from 0, formula 2 is used. .

Embodiment 3

The present embodiment proposes an interference measurement method, where the network side passes high layer signaling and/or physics. The layer dynamic signaling sends interference measurement indication information, and the interference measurement indication information indicates that the target terminal performs interference measurement by using specified data and/or control channel resources.

The data and/or control channel resources used for interference measurement, in the case of an FDD system extended cyclic prefix (Extended CP), the resources include one or more of the following:

(1) The resources of the third time domain symbol of the second time slot in each subframe, as shown in FIG. 6, notify the target terminal to use resource 1 through high layer signaling or DCI signaling (the time-frequency position coordinates are (11) , 8), (10, 8), (9, 8), (8, 8)) and/or resource 2 (time-frequency position coordinates are (7, 8), (6, 8), (5, 8) , (4, 8) ) and/or resource 3 (time-frequency position coordinates (3, 8), (2, 8), (1, 8), (0, 8) are used for interference measurement; or, (11, 8), (10, 8) RE is resource 1, definition (9, 8), (8, 8) RE is resource 2, and definition (7, 8), (6, 8) RE is Resource 3, REs defining (5, 8), (4, 8) are resources 4, REs defining (3, 8), (2, 8) are resources 5, definitions (1, 8), (0, 8 The RE is a resource 6, and the target terminal is notified by the higher layer signaling or the DCI signaling to use one or more of the six resources for interference measurement.

(2) Resources other than the resources occupied by the CRS of the first and/or second time domain symbols of the second time slot in each subframe, as shown in FIG. Considering that the frequency domain position of the CRS is shifted with the cell ID (the initial frequency domain position of the CRS in one RB = (cell ID) mod 6), the resources including the CRS are divided into four groups, and resources are used. In the case of interference measurement, the resources occupied by CRS in each group are excluded, and the resources that can be used in each group are 4 REs. Notifying the target terminal to use the resource 1 and/or the resource 2 and/or the resource 3 and/or the resource 4 for interference measurement by using high layer signaling or DCI signaling; or, according to different time slots, the four groups of resources may be used Each group of resources is divided into 2 groups, so that 8 resources can be obtained through high-level signaling or The DCI signaling informs the target terminal to use one of the eight resources for interference measurement. The target terminal can also determine the resource index for interference measurement by Equation 1 or Equation 2 as follows:

Equation 1: Resource Index = (physical cell ID / virtual cell ID) mod (total number of resources) +1

Embodiment 4

The data and/or control channel resources used for interference measurement are in the case of a conventional cyclic prefix of the TDD system (the number of CRS ports is 2), and the resources include one or more of the following:

(1) The first and/or reciprocal numbers of the first and/or second time slots in each sub-frame are (9, 5), (9, 6), (9, 12), (9) , 13) RE is resource 1, define RE with coordinates (8, 5), (8, 6), (8, 12), (8, 13) as resource 2, and define coordinates as (7, 5), The RE of (7, 6), (7, 12), (7, 13) is resource 3, and the coordinates are defined as (4, 5), (4, 6), (4, 12), (4, 13) RE is resource 4, and REs with coordinates (3, 5), (3, 6), (3, 12), (3, 13) are defined as resource 5, and coordinates are defined as (2, 5), (2, 6 ), (2, 12), (2, 13) RE is resource 5;

(2) The division of the fifth time domain symbol of the first time slot and/or the second time slot in each subframe Other resources other than resources occupied by CS, as shown in Figure 9;

(3) The resources of the third time domain symbol of the second time slot in each subframe, as shown in FIG. 10, including the defined coordinates (11, 9), (10, 9), (9, 9), The RE of (8, 9) is resource 1, and the coordinates of (7, 9), (6, 9), (5, 9), (4, 9) are defined as resource 2, and the coordinates are defined as (3, 9), (2, 9), (1, 9), (0, 9) RE is resource 3.

The network side notifies the target terminal to use one or more resources of the multiple resources for interference measurement by using high layer signaling or DCI signaling, or the target terminal may also determine the interference measurement by using Equation 1 or Equation 2 below. Resource index:

+1

Embodiment 5

The data and/or control channel resources used for interference measurement are in the case of a TDD system extended cyclic prefix (the number of CRS ports is 2), and the resources include one or more of the following:

(1) The first and/or reciprocal of the first and/or second time slots in each sub-frame are the (9, 4), (9, 5) REs as resource 1, definition (6) , 4), (6, 5) RE For resource 2, the REs defining (3, 4), (3, 5) are resources 3, and the REs defining (0, 4), (0, 5) are resources 4;

(2) The resources of the first and/or second time domain symbols of the second time slot in each subframe other than the resources occupied by the CRS, as shown in FIG. 12, define four resources;

The network side notifies the target terminal to use one or more resources of the multiple resources for interference measurement by using high layer signaling or DCI signaling, or the target terminal may also determine resources for interference measurement by using Equation 1 or Equation 2 below. Index:

+1

Embodiment 6

The network side sends interference measurement indication information to the target terminal, and instructs the target terminal to perform interference measurement, where the interference measurement indication information is used to indicate information of the interference source type to the target terminal.

The type of interference source type includes one or more of the following combinations:

(1) interference from the PDSCH;

(2) interference from the ePDCCH;

(3) interference from the PDCCH;

(4) Interference from the mixed channel.

The network side indicates the type of interference received to the target terminal through 2-bit high layer signaling or DCI signaling, as shown in Table 5.

Form 5

After the target terminal receives the indication information of the interference source type, the target terminal may further This indication is used to determine the number of REs used for interference measurements:

(1) If the interference source is PDSCH, the number of REs predefined for interference measurement is 2; (2) If the interference source is ePDCCH, the number of REs predefined for interference measurement is 4; (3) If the interference source For the PDCCH, the number of REs pre-defined for interference measurement is 4; (4) if the interference source is a hybrid channel, the number of REs predefined for interference measurement is 4; the location of the predefined RE and the target terminal The physical cell ID is located or the virtual cell ID of the target terminal, and the target terminal measures interference on the predefined RE and performs interference cancellation and suppression.

Example 7

The present embodiment provides an interference measurement method. First, the base station and the base station exchange scheduling type information through the X2 interface. The scheduling type includes: resource scheduling in sub-band units, resource scheduling in RB units, and pre-processing. Whether the encoding operation has a binding (bundling). After receiving the scheduling type information sent by the neighboring cell (strong interfering cell), the base station of the cell where the target terminal is located determines the number of REs used by the target terminal for interference measurement. For example, if adjacent strong interfering cells are scheduled in sub-band units and the precoding operations are bound, the number of REs used for interference measurement is 2, if adjacent strong interfering cells are performed in units of RBs. For scheduling, the number of REs used for interference measurement is 4. After the number of REs is determined, the location where the interference measurement resource is located is determined according to the physical cell ID of the target terminal or the virtual cell ID of the target terminal, and the number of the interference measurement REs that the network side uses for high-level signaling or physical layer signaling. And the location information indicates interference measurement to the target terminal. The above method for determining the number of REs for interference measurement according to the scheduling type of the neighboring cell can reduce the resource overhead for the interference measurement while ensuring the accuracy of the interference measurement.

Example eight

The network side sends interference measurement parameter configuration information to the target terminal, and indicates that the target terminal performs interference measurement, where the parameter configuration information used for the interference measurement includes one of the following information or Multiple:

(1) information indicating a physical cell ID of the interfering cell and/or a virtual cell ID of the interfering user;

(2) information for indicating a transmission mode of the interfering UE;

(3) information for indicating the power of the transmitted signal of the interfering cell;

Based on the parameter configuration information, the target terminal measures the channel from the interfering cell to the target terminal, and then uses the advanced receiver to perform interference cancellation and suppression.

The integrated modules described in the embodiments of the present invention may also be stored in a computer readable storage medium if they are implemented in the form of software functional modules and sold or used as separate products. Based on such understanding, the technical solution of the embodiments of the present invention may be embodied in the form of a software product in essence or in the form of a software product. The computer software product is stored in a storage medium and includes a plurality of instructions. A computer device (which may be a personal computer, server, or network device, etc.) is implemented to perform all or part of the methods described in various embodiments of the present invention. The foregoing storage medium includes: a USB flash drive, a removable hard disk, a read-only memory (ROM), a random access memory (RAM), a magnetic disk or an optical disk, and the like. The medium of the code. Thus, embodiments of the invention are not limited to any particular combination of hardware and software.

Correspondingly, the embodiment of the present invention further provides a computer storage medium, wherein a computer program is stored, and the computer program is used to execute the interference measurement method of the embodiment of the present invention.

The above is only the preferred embodiment of the present invention and is not intended to limit the scope of the present invention. Industrial applicability

The method of the embodiment of the present invention includes: the network side sends interference measurement indication information to the target terminal, and indicates that the target terminal performs interference measurement, where the interference measurement indication information includes parameter configuration information used to indicate interference measurement and/or is used for indication. Information about the type of interference source. Implemented by the present invention For example, since the network side transmits the interference measurement indication information to the target terminal, the information indicates that the target terminal performs the interference measurement, and therefore, the interference measurement effect of the data channel/control channel can be improved.

Claims

Claim

1. An interference measurement method, the method comprising:

Parameter configuration information for indicating interference measurement;

Information used to indicate the type of interference source.

2. The method according to claim 1, wherein the parameter configuration information for indicating interference measurement comprises at least one of the following information:

Common reference signal CRS port for interference measurement;

Data and/or control channel resources for interference measurements;

Information indicating a physical cell identity ID of the interfering cell and/or a virtual cell ID of the interfering user;

The method according to claim 2, wherein the CRS port for interference measurement comprises: CRS port 0, CRS port 1, CRS port 2, at least one port of CRS port 3;

The method according to claim 2, wherein the CRS port for interference measurement is CRS port 2 and/or CRS port 3.

5. The method according to claim 2, wherein the data and/or control channel resources used for interference measurement are configured by a network side, or are predefined resources;

The method further includes: the network side transmitting a zero power signal on the RE corresponding to the resource, The target terminal performs interference measurement by the signal received on the resource.

The method according to claim 2, wherein the data and/or control channel resources used for interference measurement, the number N of resources in each resource block RB is related to the scheduling type of the neighboring cell;

7. The method according to claim 2, wherein the data and/or control channel resources used for interference measurement comprise:

Or,

Resources other than the resources occupied by the CRS of the first and/or second time domain symbols of the second time slot in each subframe, including coordinates (11, 7), (11, 8), (10) , 7), (10, 8), (8, 7), (8, 8), (7, 7), (7, 8), (5, 7), (5, 8), (4, 7 ), (4, 8), (2, 7), (2, 8), (1, 7), (1, 8) RE;

Or,

8. The method according to claim 2, wherein the data and/or control channel resources used for interference measurement comprise: In the case where the FDD system extends the cyclic prefix Extended CP, the resources of the third time domain symbol of the second time slot in each subframe include coordinates (11, 8), (10, 8), (9, 8). , (8, 8), (7, 8), (6, 8), (5, 8), (4, 8), (3, 8), (2, 8), (1, 8), ( 0, 8) of the RE;

Or,

9. The method according to claim 2, wherein the data and/or control channel resources used for interference measurement comprise:

Or,

The resources of the third time domain symbol of the second time slot in each sub-frame, including coordinates (11, 9), (10, 9), (9, 9), (8, 9), (7, 9 ), (6, 9), (5, 9), (4, 9), (3, 9), (2, 9), (1, 9), (0, 9) RE.

10. The method according to claim 2, wherein the data and/or control channel resources used for interference measurement comprise:

Or,

The method according to claim 1, wherein the information indicating the type of the interference source includes at least one of the following information:

Interference from the physical downlink shared channel PDSCH;

Interference from the enhanced physical downlink control channel ePDCCH;

Interference from the physical downlink control channel PDCCH;

Interference from the mixed channel.

The method according to claim 2, wherein the method further comprises: the network side instructing, by the high layer signaling/physical layer dynamic signaling, the CRS port for interference measurement to the target terminal.

The method according to claim 12, wherein the network side configures, by the high layer signaling, multiple sets of CRS ports for interference measurement for the target terminal, and indicates to the target terminal through physical layer dynamic signaling. A set of CRS ports is used for current interference measurements.

The method according to claim 2, wherein the method further comprises: network side communication The higher layer signaling/physical layer dynamic signaling indicates the data and/or control channel resources for interference measurement to the target terminal.

The method according to claim 14, wherein the network side configures, by the high layer signaling, multiple sets of data and/or control channel resources for interference measurement for the target terminal, and performs physical layer dynamic signaling to the target. The terminal instructs to use one of the data and/or control channel resources for the current dry measurement.

16. The method according to claim 2, wherein the method further comprises: the network side transmitting zero on the CRS port for interference measurement or data and/or control channel resources for interference measurement The power signal is used for data mapping by rate matching or puncturing.

The method according to claim 6, wherein the network side base station and the base station exchange the scheduling type information through an X2 interface, and the scheduling type includes: performing resource scheduling in units of sub-bands, and performing resource scheduling in units of RBs. Whether the precoding operation has a binding bundling

18. An interference measurement method, the method comprising:

Parameter configuration information for indicating interference measurement;

Information used to indicate the type of interference source.

19. The method according to claim 18, wherein the parameter configuration information for indicating interference measurement comprises at least one of the following information:

Common reference signal CRS port for interference measurement;

Data and/or control channel resources for interference measurements;

Information for indicating a transmission mode of the interfering user equipment UE; Information indicating the power of the transmitted signal of the interfering cell.

The method according to claim 19, wherein the CRS port for interference measurement comprises: at least one of a CRS port 0, a CRS port 1, a CRS port 2, and a C S port 3;

The method further includes: the network side transmitting a zero power signal on the resource element RE corresponding to the CRS port of the bandwidth where the target terminal is located, and the target terminal performs interference measurement by using the signal received on the RE.

The method according to claim 19, wherein the CRS port used for interference measurement is CRS port 2 and/or CRS port 3.

22. The method according to claim 19, wherein the data and/or control channel resources used for interference measurement are configured by a network side, or are predefined resources; and the target terminal receives by using the resources. The incoming signal is used for interference measurement.

The method according to claim 19, wherein the data and/or control channel resources used for interference measurement, the number N of resources in each resource block RB is related to the scheduling type of the neighboring cell. When the neighboring cell is scheduled in sub-band units, then N<=M; when the neighboring cell is scheduled in units of RBs, then N>M, where M is an integer between 1 and 4, including 1 And 4.

24. The method according to claim 19, wherein the data and/or control channel resources used for interference measurement comprise:

Or,

25. The method according to claim 19, wherein the data for interference measurement and

/ or control channel resources, including:

Or,

The method according to claim 19, wherein the data and/or control channel resources used for interference measurement comprise:

In the case of a regular cyclic prefix of a time division duplex TDD system, the first and/or second last time domain symbols of the first and/or second time slots in each subframe are other than the resources occupied by the DM S. Other resources, including coordinates (9, 5), (9, 6), (9, 12), (9, 13), (8, 5), (8, 6), (8, 12), (8, 13), (7, 5), (7, 6), (7, 12), (7, 13), (4, 5) , (4, 6), (4, 12), (4, 13), (3, 5), (3, 6), (3, 12), (3, 13) RE;

Or,

5 resources other than the resources occupied by CRS in the first time slot of each subframe and/or the fifth time domain symbol of the second time slot, including coordinates (11, 4), (11, 11) , (10, 4), (10, 11), (8, 4), (8, 11), (7, 4), (7, 11), (5, 4), (5, 11), ( 4, 4), (4, 11), (2, 4), (2, 11), (1, 4), (1, 11) RE;

Or, the resource of the third time domain symbol of the second time slot in each subframe, including coordinates 10 (11, 9), (10, 9), (9, 9), (8, 9), ( RE of 7, 9), (6, 9), (5, 9), (4, 9), (3, 9), (2, 9), (1, 9), (0, 9).

In the case where the TDD system extends the cyclic prefix, the first and/or second time of the first and/or second time slots in each subframe are the first and/or the second to last time domain symbols other than the resources occupied by the DM S. Resources, including coordinates (9, 4), (9, 5), (6, 4), (6, 5), (3, 4), (3, 5), (0, 4), (0, 5) of the RE;

Or,

In addition to the CCRRSS, the first one and/or or the second and second time domain symbols of the second and second time slots in each sub-frame are deleted. 2200 accounts for other sources of resources other than the sources of resources, including the coordinates of ((1111,, 66)), ((1111,, 99)), ( 1100,, 66)),, ((1100,, 99)), ((88,, 66)), ((88,, 99)), ((77,, 66)), (( 77,, 99)),, ((55,, 66)), ((55,, 99)), ((44,, 66)), ((44,, 99)), (( 22,, 66)), ((22,, 99)), (( 11,, 66)), (( 11, , 99)) RREE. .

2288, the root method according to the claim of claim 1188, wherein the description is used to indicate the type of the dry interference source type Information, including the following information, to at least one of the following information:

Interference from the enhanced physical downlink control channel ePDCCH;

Interference from the physical downlink control channel PDCCH;

Interference from the mixed channel.

The method according to claim 19, wherein the method further comprises: receiving, by the target terminal, CRS port information sent by the network side through high layer signaling/physical layer dynamic signaling, and determining the CRS port used for interference measurement. .

The method according to claim 29, wherein the target terminal receives multiple sets of CRS ports for interference measurement configured by the network side for the target terminal by using the high layer signaling, and receives physical layer dynamic signaling by using Make sure to use one of the CRS ports for the current interference measurement.

The method according to claim 19, wherein the target terminal receives the data and/or control channel resources for interference measurement sent by the network side through high layer signaling/physical layer dynamic signaling, and determines that the Interfering with measured data and/or control channel resources.

32. The method according to claim 31, wherein the target terminal receives multiple sets of data and/or control channel resources for interference measurement configured by the network side for the target terminal by using the high layer signaling, and receives the received data. Physical layer dynamic signaling determines which set of data and/or control channel resources are used for current interference measurements.

33. The method according to claim 19, wherein the target terminal defaults to sending, by the network side, a zero power signal on the CRS port for interference measurement or data and/or control channel resources used for interference measurement. And extract data according to the rate matching or puncturing rules of the data map.

34. A network side device, where the network side device includes:

The interference measurement indication unit is configured to instruct the target terminal to perform interference measurement according to the interference measurement indication information, where the interference measurement indication information includes: parameter configuration information used to indicate the interference measurement, and/or information used to indicate the type of the interference source;

And a sending unit, configured to send the interference measurement indication information to the target terminal. The device according to claim 34, wherein the interference measurement indication unit is further configured to indicate that the parameter configuration information of the interference measurement includes at least one of the following information: a common reference signal CRS port for interference measurement ;

Data and/or control channel resources for interference measurements;

36. The device according to claim 35, wherein the interference measurement indication unit is further configured to indicate that the CRS port of the interference measurement comprises: at least one of CRS port 0, CRS port 1, CRS port 2, and CRS port 3. Port

The sending unit is further configured to send a zero power signal on the resource element RE corresponding to the CRS port of the bandwidth where the target terminal is located.

The device according to claim 35, wherein the interference measurement indication unit is further configured to indicate data of interference measurement and/or control channel resources, configured by the network side device, or a predefined resource. ;

The sending unit is further configured to send a zero power signal on the RE corresponding to the resource.

The device according to claim 35, wherein the interference measurement indication unit is further configured to indicate data of interference measurement and/or control channel resources, including:

Or,

The resource of the third time domain symbol of the second time slot in each subframe, including the coordinates (11,

9), (10, 9), (9, 9), (8, 9), (7, 9), (6, 9), (5, 9), (4, 9), (3, 9) , (2, 9), (1, 9), (0, 9) RE.

Or,

The device according to claim 35, wherein the interference measurement indication unit is further configured to indicate, by the high layer signaling/physical layer dynamic signaling, the target terminal for the interference measurement. CS port.

43. The device according to claim 42, wherein the interference measurement indication unit is further configured to: when configuring multiple sets of CRS ports for interference measurement, and indicating to the target terminal by physical layer dynamic signaling, A set of CRS ports is used for current interference measurements.

The device according to claim 35, wherein the interference measurement indication unit is further configured to indicate, by the high layer signaling/physical layer dynamic signaling, the data and/or the control channel for the interference measurement to the target terminal. Resources.

The device according to claim 44, wherein the interference measurement indication unit is further configured to configure, by the high layer signaling, multiple sets of data and/or control channel resources for interference measurement for the target terminal, and The physical layer dynamic signaling is used to indicate to the target terminal that one of the data and/or control channel resources is used for the current interference measurement.

46. The device according to claim 35, wherein the sending unit is further configured to send a zero power signal on the CRS port for interference measurement or data and/or control channel resources used for interference measurement. And use the rate matching or puncturing method for data mapping.

47. A terminal side device, where the terminal side device is a target terminal, including:

The device according to claim 47, wherein the interference measurement unit is further configured to perform interference measurement according to at least one of the following information: the parameter configuration information indicating the interference measurement:

Common reference signal CRS port for interference measurement;

Data and/or control channel resources for interference measurements;

Used to indicate the physical cell identity ID of the interfering cell and/or the virtual cell ID of the interfering user Information

The device according to claim 48, wherein the interference measurement unit is further configured to perform interference measurement according to a CRS port indicating interference measurement, where the CRS port of the interference measurement comprises: CRS port 0, CRS port 1, At least one of CRS port 2 and CRS port 3;

The receiving unit is further configured to perform interference measurement by using a signal received on the resource element RE corresponding to the CRS port of the bandwidth where the target terminal is located.

The device according to claim 48, wherein the interference measurement unit is further configured to perform interference measurement according to the interference measurement data and/or the control channel resource, where the interference measurement data and/or control channel resources are The network side device performs configuration, or is a predefined resource. The receiving unit is further configured to perform interference measurement by using a signal received on the RE corresponding to the resource.

The device according to claim 48, wherein the interference measurement unit is further configured to perform interference measurement according to data and/or control channel resources indicating interference measurement, the interference measurement data and/or control channel resources. Includes:

Or,

Resources other than the resources occupied by the CRS of the first and/or second time domain symbols of the second time slot in each subframe, including coordinates (11, 7), (11, 8), (10) , 7), (10, 8), (8, 7), (8, 8), (7, 7), (7, 8), (5, 7), (5, 8), (4, 7), (4, 8) , (2, 7), (2, 8), (1, 7), (1, 8) RE;

Or,

52. The device according to claim 48, wherein the interference measurement unit is further configured to perform interference measurement according to data and/or control channel resources indicating interference measurement, the interference measurement data and/or control channel resources. Includes:

Or,

Or, the resource of the third time domain symbol of the second time slot in each subframe, including coordinates (11, 9), (10, 9), (9, 9), (8, 9), (7) RE of 9), (6, 9), (5, 9), (4, 9), (3, 9), (2, 9), (1, 9), (0, 9).

54. The device according to claim 48, wherein the interference measurement unit is further configured to perform interference measurement according to data indicating interference measurement and/or control channel resources, the interference measurement data and/or control channel resources. Includes:

Or,

The device according to claim 48, wherein the receiving unit is further configured to receive CRS port information sent by the network side device by using high layer signaling/physical layer dynamic signaling, and determine The CRS port used for interference measurement.

The device according to claim 55, wherein the receiving unit is further configured to receive, by the network side device, multiple sets of CRS ports for interference measurement configured by the high-level signaling for the target terminal, and receive the The physical layer dynamic signaling to determine the set of CRS ports used for current interference measurements.

The device according to claim 48, wherein the receiving unit is further configured to receive the data and/or control channel for interference measurement sent by the network side device by using high layer signaling/physical layer dynamic signaling. Resources, determining the data and/or control channel resources for interference measurements.

The device according to claim 57, wherein the receiving unit is further configured to receive, by the network side device, multiple sets of data and/or control channels for interference measurement configured by the high-level signaling for the target terminal. Resources, and determine, by the received physical layer dynamic signaling, a set of data and/or control channel resources used for current interference measurements.